Miner&#39;s safety lamp



March 9 1926.

H. MEYER MINERS SAFETY LAMP Filed March 21, 1925 [22 van [0 r:

Allow-nay.

Patented Mar. 9, 1926.

HEINRICH MEYER, OF HIDDESEN, NEAR DETMOLD, GERMANY.

MINER S SAFETY LAMP.

Application filed March 21, 1925.

3 To all whom, it may concern:

Be it known that I, HEINRICH MEYER, a citizen of Germany, residing atHiddesen, near Detmold, in the State of Lippe-Detmold, Germany, haveinvented certain new and useful Improvements in Miners Safety Lamps (forwhich I have filed an application in Germany July 14, 1923); and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to improvements in miners safety lamps, and moreparticularly in lamps of the type provided with a re flector adapted tothrow the light rays to one side, said reflector being mounted for beingmoved away from the source of light for permitting the same to throw thelight to all sides and to illuminate the whole room. The object of theimprovements is to provide a lamp of this type in which the reflector isprotected from injury and dust, and with this object in View myinvention consists in disposing the reflector within the glass bulb,screen or other frame surrounding the lamp and providing the saidreflector or a part thereof with means adapted to be operated from theoutside of the bulb or frame for removing the reflector away from thelamp.

For the purpose of explaining the invention an example embodying thesame has been shown in the accompanying drawing in which the samereference characters have been used in all the views to indicate corresponding parts. In said drawing,

Fig. 1, is a sectional elevation of the lamp,

Fig. 2, is a sectional plan view of Fig. 1 taken on the line 22,

Fig. 3, is a sectional elevation showing a modification, and

Fig. 4, is a top-plan view of Fig. 3 with the glass bulb removed.

In the example shown in Figs. 1 and 2 the safety lamp comprises a casingh enclosing an electric battery, an incandescent lamp (4, a cylindricalscreen i enclosing the incandescent lamp, and a reflector composed of astationary part b and a movable part c. The movable part c is secured totwo arms 70 fixed to rock shaft m. mounted in uprights 'n, and having asprocket wheel 51 secured thereto; The said sprocket wheel is connectedSerial No. 17,271.

by a chain 1" with a sprocket wheel 8 secured to the spindle t of amilled disk 0.

As appears more particularly from Fig. 1 the rear part e of thereflector can be re moved from the main part b and the lamp a by rockingthe shaft m by means of the milled disk 0 and the chain and sprocketgearing g, 1", s, the shaft m being held in set position by friction.The reflector including the removable part thereof is disposedinternally of the frame or screen i, and the milled disk Z) for movingthe part 6 is located outside the frame 2', so that the re" flector maybe shifted without removing the hood 2'.

In Figs. 3 and 4 I have shown a modification in which the wholereflector 32 is mounted for being removed away from the lamp a, saidreflector being likewise located internally of the glass bulb 0enclosing the lamp. As shown the reflector 10 is secured to a pair ofarms cl fixed to a rock shaft 9, which rock shaft is mounted in theupper wall of the casing h and carries a milled disk -0. The operationof the reflector by means of the milled disk 0 is similar to theoperation of the part c of the reflector shown in Figs. 1 and 2, andFig. 3 shows the reflector respectively in reflecting and inoperativepositions.

lVhile in describing the invention reference has been made to particularexamples embodying the same I wish it to be understood that my inventionis not limited to the constructions shown in the drawing, and thatvarious changes may be made in the general arrangement of the apparatusand the construction of its parts without departing from the invention.

I claim:

1. A safety lamp comprising a casing, a transparent hood on said casing,a light source mounted on said casing and located within the hood, aside reflector pivotally mounted on said casing and normally below thelight source to allow light to pass in all directions through the hoodand means operable from the outside of the hood for moving the reflectorinto or out of position for reflecting light through one side portion ofthe hood and covering the opposite portion of the hood. I p

2. A safety lamp, comprising a light source, a hood enclosing the sameand hav ing :3 wall permeable to light, a reflector within said head andcomprising a station'- ary and a movable section, and means to move saidmovable section into and out of position for reflecting); lightemanating from said light source through one permeable 5 part of saidWall and covering another permeable part of said Wall.

3. A safety lamp, comprisingalight source, a hood enclosing the same andhaving a Wall permeable to light, a reflector 10 Within said hood andcomprising a stationmy and a movable section, and means operative, fromthe outside of the hood for moving said movable section into and out ofposition for reflecting light emanating from said light source throughone permeable part 15 of said Wall and covering another permeable partof said Wall. I

In testimony whereof I hereunto af'fix my HEINRICH MEYER.

signature.

